'Guard' in the Bible

O Lord, how long are you going to just stand there and watch this? Rescue me from their destructive attacks; guard my life from the young lions!

A song of ascents, by Solomon. If the Lord does not build a house, then those who build it work in vain. If the Lord does not guard a city, then the watchman stands guard in vain.

O Lord, place a guard on my mouth! Protect the opening of my lips!